Observed Signal · Jul 11, 2026 · Technical Release · Source: DEV Community · Impact: 2/5 · Sentiment: Positive
On-chain Fan Loyalty Tracker Preserves Check-in Streaks
Loyalty Ledger is a developer-built fan loyalty tracker that stores check-ins, streaks, badges and activity on the Solana blockchain rather than in a central app database. The project uses an Anchor program and program-derived addresses (PDAs) keyed to (wallet, sport, team) so check-ins create or update program-owned accounts on Solana Devnet. The app includes a Fan Passport, Fan Score, tiered badges that mint real SPL tokens, and an on-chain leaderboard. Source code is available on GitHub and a live demo is hosted (Devnet). The author chose Solana for low fees and ~1-second confirmations; the post notes practical devnet limitations (faucet rate limits) encountered during development.
A practical proof-of-concept showing blockchain-native loyalty records and on-chain badge minting; relevant to loyalty management and identity but is an individual developer project on Devnet with limited immediate industry impact.
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Key Takeaways & Evidence Grounding
- Loyalty Ledger is a fan loyalty tracker that stores check-in streaks, badges, and history on the Solana blockchain.
- The project uses an Anchor program and a Program Derived Address (PDA) per fan keyed to (wallet, sport, team) to create or update on-chain fan records.
- Claiming a badge mints a real SPL token to the user's wallet; check-ins are actual Solana transactions (on Devnet).
- Source code is published on GitHub and a live demo is available (hosted at a vercel.app URL).
- The app instructs users to connect with the Phantom wallet and use Solana Devnet; the author cites Solana's low fees and fast confirmations as the rationale.
Connected Companies & Entities
2 Entities mapped“GitHub Repository: https://github.com/ishantgupta30/Loyalty-Ledger...”
“Live app: https://loyalty-ledger-blond.vercel.app...”
Ontology Mapping & Concepts
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